whos excited for Czech to come out !!! :D. i can't wait to start checking out the course.
Just a minor correction to your statement: " I can't wait to start CZECHING out the course". So? Is it better? :p YES, I'm very very excited for it.
I can nearly confirm that it won't be released today, because I checked the owl sprite and the flag sprite for an update https://d7mj4aqfscim2.cloudfront.net/images/owl-sprite21.svg and Czech is not there.
(If you want to see the flag sprite, change 'owl' in the link above to flag and the number 21 to 13). To check for updates, change the owl sprite number from version 21 to 22, and the flag sprite from version 13 to 14. If they give back an error message, Czech hasn't been added yet. (The numbers are the versions, so every time a new owl is added, the number will increase by one).
Another sign is that the forum usually appears early on the day of the release. In 'My Subscriptions' scroll down until you see Czech. If you see it, it will be released on that day, but if you don't it won't.
These are just observations from previous releases, so there is a chance, but I highly doubt it.
Czech is on the flag sprite (near the middle of the third row). It was probably added during the English for Czech's time in the incubator and has nothing to do with this course. And HV was available for several hours before the owl and flag sprites were updated (and the Japanese owl was added at the same time but maybe mobile is somehow different in that respect).
If you look at the last update from Team Czech (https://incubator.duolingo.com/courses/cs/en/status), they estimated having the tree locked by the end of July, but that it wouldn't go into beta until August. It's standard for DL to take some time once the tree is locked to get it up and running, but the time it takes can vary.
From the screenshots we've seen (scroll down to week 94 in the status updates), the Czech course looks like it's going to be amazing- very detailed, lots of skills, in the range of the German and possibly even the Norwegian trees.